| Computer Code: |
STHP |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Lutetian Age (GL)
— Lutetian Age (GL) |
| Lithological Description: |
The Stanners Hill Pebble Bed consists of cross-bedded glauconitic gravelly sand and gravel. The gravel is mainly composed of flint but some is made of quartz or of Lower Cretaceous chert (Dewey and Bromehead, 1915, p.55).
The Stanners Hill Pebble Bed appears to be a localised marine channel-fill between the top of the Windlesham Formation (WIDS) and the Camberley Sand Formation (CMBS). |
| Definition of Lower Boundary: |
none recorded or not applicable
|
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
The Stanners Hill Pebble Bed is up to about 4 m thick. |
| Geographical Limits: |
The Stanners Hill Pebble Bed is probably confined to the Bracklesham Group outcrop in Surrey. |
| Parent Unit: |
Windlesham Formation (WIDS)
|
| Previous Name(s): |
Basement Pebble Bed (Of The Upper Bagshot Beds)
(-5093)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Wellington College Borehole (SU86SW 89) [SU 8313 6350]. |
| Reference(s): |
| King, C. in prep. A revised correlation of Palaeogene and Neogene deposits in the British Isles. Geological Society of London Special Report. |
| Ellison, R A and Williamson, I T. 1999. Geology of the Windsor and Bracknell district - a brief explanation of the geological map. Sheet Explanation of the British Geological Survey. 1:50 000 Sheet 269 Windsor (England and Wales). |
| Aldiss, D T. 2014. The stratigraphical framework for the Palaeogene successions of the London Basin, UK. British Geological Survey Open Report OR/14/008. 95 pp. |
| Dewey, H, and Bromehead, C E N. 1915. The geology of the country around Windsor and Chertsey. Memoir of the Geological Survey of Great Britain, Sheet 269 (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E269
|
